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/* $Id: geomprocs.h,v 1.1 2005/10/18 18:43:48 ellson Exp $ $Revision: 1.1 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
/* geometric functions (e.g. on points and boxes) with application to, but
* no specific dependance on graphs */
#ifndef GV_GEOMPROCS_H
#define GV_GEOMPROCS_H
#ifdef __cplusplus
extern "C" {
#endif
extern point pointof(int, int);
extern pointf cvt2ptf(point);
extern point cvt2pt(pointf);
extern point add_points(point, point);
extern pointf add_pointfs(pointf, pointf);
extern point sub_points(point, point);
extern pointf sub_pointfs(pointf, pointf);
extern point exch_xy(point p);
extern pointf exch_xyf(pointf p);
extern box boxof(int llx, int lly, int urx, int ury);
extern boxf boxfof(double llx, double lly, double urx, double ury);
extern box mkbox(point, point);
extern boxf mkboxf(pointf, pointf);
extern box box_bb(box, box);
extern boxf boxf_bb(boxf, boxf);
extern box box_intersect(box, box);
extern boxf boxf_intersect(boxf, boxf);
extern bool box_overlap(box, box);
extern bool boxf_overlap(boxf, boxf);
extern bool box_contains(box, box);
extern bool boxf_contains(boxf, boxf);
extern box flip_rec_box(box b, point p);
extern int lineToBox(pointf p1, pointf p2, boxf b);
extern point ccwrotatep(point p, int ccwrot);
extern pointf ccwrotatepf(pointf p, int ccwrot);
extern point cwrotatep(point p, int cwrot);
extern pointf cwrotatepf(pointf p, int cwrot);
#ifdef __cplusplus
}
#endif
#endif
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